Question

求两道五年级简便计算题

27.3×3.6+36×7.27=?
要用简便法解释 我帮朋友问的
还有一道
(4.69×2.3+53.1×0.232)÷2.3=?

Answer 1

27.3×3.6+36×7.27
＝2.73×36＋36×7.27
＝36×（2.73＋7.27）
＝36×10
＝360

应该是
(4.69×2.3+53.1×0.23)÷2.3
吧

(4.69×2.3+53.1×0.23)÷2.3
＝（4.69×2.3＋5.31×2.3）÷2.3
＝[2.3×（4.69+5.31）]÷2.3
＝2.3×10÷2.3
＝10

Answer 2

27.3×3.6+36×7.27
＝2.73×36＋36×7.27
＝36×（2.73＋7.27）
＝36×10
＝360
好像题目错了吧？那个0.232似乎是0.23
4.69×2.3+53.1×0.23)÷2.3
＝（4.69×2.3＋5.31×2.3）÷2.3
＝[2.3×（4.69+5.31）]÷2.3
＝2.3×10÷2.3
祝您愉快！
＝10

Answer 3

27.3×3.6+36×7.27
=3.68(72.7+27.3)
=3.68*100
=368
(4.69×2.3+53.1×0.232)÷2.3
=4.69*2.3/2.3+53.1*0.232/2.3

Answer 4

27.3×3.6+36×7.27=27.3×3.6+3.6×72.7
=3.6×(27.3+72.7)
=3.6×100=360

(4.69×2.3+53.1×0.232)÷2.3=4.69×2.3÷+53.1×0.232÷2.3
=4.69+5.31×2.32÷2.3
=(4.69+5.31)×1
=10

0.232 ? 写错了吧？

Answer 5

27.3*3.6+36*7.27=27.3*3.6+3.6*72.7=3.6*(27.3+72.7)=360

(4.69×2.3+53.1×0.232)÷2.3?
是(4.69×2.3+53.1×0.23)÷2.3吧?
=4.69*2.3/2.3+53.1*0.23/2.3=4.69+5.31=10